Add a indexmanager to handle document creation

Signed-off-by: Derek Ho <dxho@amazon.com>

src/main/java/org/opensearch/security/dlic/rest/api/ApiToken.java

@@ -0,0 +1,78 @@
+/*
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * The OpenSearch Contributors require contributions made to
+ * this file be licensed under the Apache-2.0 license or a
+ * compatible open source license.
+ *
+ * Modifications Copyright OpenSearch Contributors. See
+ * GitHub history for details.
+ */
+
+package org.opensearch.security.dlic.rest.api;
+
+import java.io.IOException;
+import java.time.Instant;
+import java.util.List;
+
+import org.opensearch.core.xcontent.ToXContent;
+import org.opensearch.core.xcontent.XContentBuilder;
+
+public class ApiToken implements ToXContent {
+    private String description;
+    private String jti;
+
+    private Instant creationTime;
+    private List<String> roles;
+
+    public ApiToken(String description, String jti, List<String> roles) {
+        this.creationTime = Instant.now();
+        this.description = description;
+        this.jti = jti;
+        this.roles = roles;
+
+    }
+
+    public String getDescription() {
+        return description;
+    }
+
+    public void setDescription(String description) {
+        this.description = description;
+    }
+
+    public String getJti() {
+        return jti;
+    }
+
+    public void setJti(String jti) {
+        this.jti = jti;
+    }
+
+    public Instant getCreationTime() {
+        return creationTime;
+    }
+
+    public void setCreationTime(Instant creationTime) {
+        this.creationTime = creationTime;
+    }
+
+    public List<String> getRoles() {
+        return roles;
+    }
+
+    public void setRoles(List<String> roles) {
+        this.roles = roles;
+    }
+
+    @Override
+    public XContentBuilder toXContent(XContentBuilder xContentBuilder, ToXContent.Params params) throws IOException {
+        xContentBuilder.startObject();
+        xContentBuilder.field("description", description);
+        xContentBuilder.field("jti", jti);
+        xContentBuilder.field("roles", roles);
+        xContentBuilder.field("creation_time", creationTime.toEpochMilli());
+        xContentBuilder.endObject();
+        return xContentBuilder;
+    }
+}

src/main/java/org/opensearch/security/dlic/rest/api/ApiTokenApiAction.java

@@ -96,7 +96,7 @@ private void apiTokenApiRequestHandlers(RequestHandler.RequestHandlersBuilder re
 
     public String createApiToken(String name, Client client) {
         createApiTokenIndexIfAbsent(client);
-        /* TODO: Create document representing the API token */
+        new ApiTokenIndexManager(client).indexToken(new ApiToken(name, "test-token", List.of()));
         return "test-token";
     }
 

src/main/java/org/opensearch/security/dlic/rest/api/ApiTokenIndexManager.java

@@ -0,0 +1,59 @@
+/*
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * The OpenSearch Contributors require contributions made to
+ * this file be licensed under the Apache-2.0 license or a
+ * compatible open source license.
+ *
+ * Modifications Copyright OpenSearch Contributors. See
+ * GitHub history for details.
+ */
+
+package org.opensearch.security.dlic.rest.api;
+
+import java.io.IOException;
+
+import org.opensearch.action.get.GetRequest;
+import org.opensearch.action.index.IndexRequest;
+import org.opensearch.client.Client;
+import org.opensearch.common.util.concurrent.ThreadContext;
+import org.opensearch.common.xcontent.XContentFactory;
+import org.opensearch.common.xcontent.XContentType;
+import org.opensearch.core.xcontent.ToXContent;
+import org.opensearch.core.xcontent.XContentBuilder;
+import org.opensearch.security.support.ConfigConstants;
+
+public class ApiTokenIndexManager {
+
+    private Client client;
+
+    public ApiTokenIndexManager(Client client) {
+        this.client = client;
+    }
+
+    public void indexToken(ApiToken token) {
+        try (final ThreadContext.StoredContext ctx = client.threadPool().getThreadContext().stashContext()) {
+
+            XContentBuilder builder = XContentFactory.jsonBuilder();
+            String jsonString = token.toXContent(builder, ToXContent.EMPTY_PARAMS).toString();
+
+            IndexRequest request = new IndexRequest(ConfigConstants.OPENSEARCH_API_TOKENS_INDEX) // Index name
+                .source(jsonString, XContentType.JSON); // Set JSON source
+
+            client.index(request);
+
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+
+    }
+
+    public Object getTokens() {
+        try (final ThreadContext.StoredContext ctx = client.threadPool().getThreadContext().stashContext()) {
+
+            return client.get(new GetRequest(ConfigConstants.OPENSEARCH_API_TOKENS_INDEX));
+
+        }
+    }
+
+}